[utils] Fix installation command

beat/web/utils/management/commands/install.py

@@ -1041,9 +1041,11 @@ class Command(BaseCommand):
         add_group('Default')
 
         # Sets up the queue and environments
-        queue, environment = \
-                setup_environment(arguments['queue_configuration'],
-                    arguments['verbosity'])
+        setup_environment(arguments['queue_configuration'],
+            arguments['verbosity'])
+        from ....backend.models import Environment, Queue
+        environment = Environment.objects.first()
+        queue = Queue.objects.first()
 
         # Iterates over projects to install
         for project in ['system'] + arguments['project']: